Course Content
TERMS AND CONCEPTS USED IN PLANT PATHOLOGY
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CLASSIFICATION OF FUNGICIDES BASED ON CHEMICAL NATURE
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CLASSIFICATION OF FUNGICIDES BASED ON METHOD OF APPLICATION
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Learn introduction to plant pathology with Braimy – B.sc Agriculture
About Lesson

Functionally cell wall is divided into 3 regions, viz.,

  1. middle lamella (made of pectins),
  2. primary wall (cellulose, pectic substances) and
  3. secondary cell wall (entirely cellulose).

Cell wall structure with plant cellular parts description outline diagram – VectorMine

Fig : Composition of cell wall

  • Middle lamella acts as intercellular cement which binds the cells together in tissue system.
  • Pectin or pectic substances are major chemical constituents of wall layers and entire middle lamella, where as in other layers, cellulose is found in good amounts.
  • Main components of cell wall are pectic substances, cellulose, hemicelluloses, lignin and small quantity of protein.
  • The epidermis of plants is covered by cuticle, whose major chemical substance is cutin in addition to cuticular wax.


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